|
how do you calculate velocity from lift equation ?
|
|
Source：Internet Author：Unknow Pubdate：2008-04-20
|
|
thekacker (Aeronautics)
15 Oct 07 20:12
guys i remember the lift equation to be
L= 1/2 rho V*V Cl S
i need to calculate V
i have rho i have cl and i have S
and i don't remember how to do that
IRstuff (Aerospace)
15 Oct 07 23:56
You still need to have lift TTFN
FAQ731-376: Eng-Tips.com Forum Policies
rb1957 (Aerospace)
16 Oct 07 6:46
to clarify ...
v = sqrt(2L/(rho*S*CL))
thekacker (Aeronautics)
16 Oct 07 12:26
i know what the formula is
airplane mass : 60,000 Kg
acceleration of gravity is 9.81 m/(s*s)
wing area is 105 m*m
density is standard icao value 1.225 kg/m*m*m 字串9
and Cl = 0.384
how do i find L from the above.
i think it has to do with finding acceleration (force / mass) and then from that calculating velocity)
but as i got old i don't remember.
any idea ?
rb1957 (Aerospace)
16 Oct 07 12:28
assume Lift=weight=mg=clqS
thekacker (Aeronautics)
16 Oct 07 13:14
Lift=weight=mg=clqS ?
q as in dynamic pressure ?
and mg ? what's that ?
40818 (Aerospace)
16 Oct 07 13:37
Well if its not magnesium, or a now defunkt car manufacturer i'm left with mass x gravity.
Long day.
rb1957 (Aerospace)
16 Oct 07 13:48
yeah, the word "weight" was a clue
字串1
the reality is a plane in level flight, so the lift reacts the weight of the plane
thekacker (Aeronautics)
16 Oct 07 21:53
i'm such a kacker
long days guys too long of a day
pressey (Aeronautics)
17 Nov 07 8:31
if its level flight then L=W then u can proceed
（Click：）
|
| Previous：Effect of a bar in air flow Next：Road Vehicle Aerodynamics |
|
[ Add TO Favorites]
[TOP] [PRINT]
[CLOCE WINDOWS] |
|
|
|
